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Reading fuse values from custom ATmega32u4 board with avrdude
ki0bk wrote:so make it the same!  try lifting the HWB pin off the pcb.    I just tried that. I lifted the the pin, and scraped away the trace to the pad for good...
Friday, 24 August 2018 - 21:39
Reading fuse values from custom ATmega32u4 board with avrdude
ki0bk wrote:Ok, that is good, on the leonardo the fuses are set like this: leonardo.bootloader.low_fuses=0xff leonardo.bootloader.high_fuses=0xd8 leonardo.bootloader....
Friday, 24 August 2018 - 15:03
Reading fuse values from custom ATmega32u4 board with avrdude
No serial or JTAG, I'm afraid.    When received it was in DFU mode, so I was able to program it.  Once programmed, it appears as a Leonardo, and it runs the code on...
Friday, 24 August 2018 - 13:51
Reading fuse values from custom ATmega32u4 board with avrdude
The relevant portion of the schematic is attached.      I'm aware that a prototype is a good idea. In this instance the board was designed and created by an...
Friday, 24 August 2018 - 12:43
WILDLY incorrect delays and times on custom ATmega32u4
Ahhhh!  Makes perfect sense.    If only I could get avrdude running, I'd fix that!  Easy enough for the time being to handle in code. Thanks!
Wednesday, 15 August 2018 - 19:13
Getting a 32u4 back into DFU. Doable as designed?
clawson wrote:PS like so many threads like this I do wonder how people get as far as committed hardware layouts before they've actually read about and understood the operation of...
Wednesday, 15 August 2018 - 19:08
Getting a 32u4 back into DFU. Doable as designed?
Indeed. I flashed it with the SparkFun Leonardo bootloader using dfu-programmer (having trouble getting avrdude to talk to libusb on my Mac). OSX sees the board.  Arduino IDE...
Wednesday, 15 August 2018 - 18:53
ATMelICE signed dummy kext for MacOS X High Sierra
I got past the permissions issues that folks were talking about, but avrdude still won't talk to libusb:   bash-3.2$ avrdude -c usbtiny -p m32u4 -U lfuse:r:low_fuse_val.hex:h...
Wednesday, 15 August 2018 - 15:31
Getting a 32u4 back into DFU. Doable as designed?
I suppose I could do that... if they had designed in a header. Crap!   So, if I'm understanding correctly, what I have here is a an embedded device that can be programmed...
Tuesday, 14 August 2018 - 17:05